带楼板的钢框架中钢梁拼接节点耗能试验及理论研究
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摘要
利用钢梁的拼接区消耗地震能量是提高结构抗震性能的手段之一,近年来人们对这种耗能方式的研究较多。本文首次对带有楼板的钢框架中钢梁拼接节点的耗能机理作了试验和有限元模拟研究。
本文试验共有3个试件,进行了拼接节点在恒定轴力下往复加载试验,研究了拼接节点的滞回性能、耗能能力、延性、强度退化和刚度退化等特征,重点研究了楼板对钢梁高强螺栓拼接节点耗能的影响。试验研究表明:考虑混凝土板影响后,试件刚度和承载力提高;试件具有较好的延性;通过对不同配筋率和混凝土板厚度的试件研究发现,配筋率越高,混凝土板厚度越大,试件刚度和承载力越大;混凝土板和钢梁之间的抗剪连接性能对钢梁拼接节点的耗能性能有一定影响。同时对节点运用有限元ANSYS软件进行了三维非线性有限元分析,有限元分析结果与试验结果较为吻合。
本文最后提出了利用钢梁拼接区耗能的钢梁拼接节点的设计方法。
Using steel beam’s splice to dissipate seismic energy is one of the means improve the structural seismic performance. In recent years, a lot of research on this kind of energy dissipation has been carried out. In this article, for the first time, experiment test and finite element simulation of high-strength bolted splice in frame structure with concrete slab considered was done to study the energy dissipation performance.
The three speciments are designed and tested under the constant axis force and reverse loads and research the hysteretic behavior, energy dissipation capacity, ductility, strength degeneration and rigidity degeneration; particular attention was paid to energy dissipation principles of high-strength bolted splice using slotted holes. The experiments and analysis indicate that the joint patterns of concrete slab considered have enough carrying capacity, better rigidity and energy dissipation behaviors. The higher reinforcement ratio and the thicker concrete slab thickness can improve rigidity and capacity. Shear connection performance affect energy dissipation capacity of the high-strength bolted splice using slotted holes.The nonlinear finite element analysis is done to the joints using software ANSYS at the same time. The results of finite element analysis coincide to the results of the experiments.
Finally, design recommendations on how to utilize beam’s splice to dissipate seismic energy is given out.
本文试验共有3个试件,进行了拼接节点在恒定轴力下往复加载试验,研究了拼接节点的滞回性能、耗能能力、延性、强度退化和刚度退化等特征,重点研究了楼板对钢梁高强螺栓拼接节点耗能的影响。试验研究表明:考虑混凝土板影响后,试件刚度和承载力提高;试件具有较好的延性;通过对不同配筋率和混凝土板厚度的试件研究发现,配筋率越高,混凝土板厚度越大,试件刚度和承载力越大;混凝土板和钢梁之间的抗剪连接性能对钢梁拼接节点的耗能性能有一定影响。同时对节点运用有限元ANSYS软件进行了三维非线性有限元分析,有限元分析结果与试验结果较为吻合。
本文最后提出了利用钢梁拼接区耗能的钢梁拼接节点的设计方法。
Using steel beam’s splice to dissipate seismic energy is one of the means improve the structural seismic performance. In recent years, a lot of research on this kind of energy dissipation has been carried out. In this article, for the first time, experiment test and finite element simulation of high-strength bolted splice in frame structure with concrete slab considered was done to study the energy dissipation performance.
The three speciments are designed and tested under the constant axis force and reverse loads and research the hysteretic behavior, energy dissipation capacity, ductility, strength degeneration and rigidity degeneration; particular attention was paid to energy dissipation principles of high-strength bolted splice using slotted holes. The experiments and analysis indicate that the joint patterns of concrete slab considered have enough carrying capacity, better rigidity and energy dissipation behaviors. The higher reinforcement ratio and the thicker concrete slab thickness can improve rigidity and capacity. Shear connection performance affect energy dissipation capacity of the high-strength bolted splice using slotted holes.The nonlinear finite element analysis is done to the joints using software ANSYS at the same time. The results of finite element analysis coincide to the results of the experiments.
Finally, design recommendations on how to utilize beam’s splice to dissipate seismic energy is given out.
引文
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[2] Duane K Miller. Lessons Learned from the Northridge Earthquake[J].Engineering Structures, 1998, 20.
[3]赵大伟,石永久.钢结构节点脆性破坏分析[J].工程力学,1999(增刊).
[4]袁素荣,李启才.树状柱钢框架梁柱连接节点加强形式的有限元分析[J].苏州科技学院学报(工程技术版),2008,21(2):27-29,34.
[5]刘刚.钢框架中钢梁高强螺栓拼接的耗能机理及抗震设计方法:[硕士学位论文].江苏:苏州科技学院,2009.
[6]赵大伟,石永久,陈宏.低周往复荷载下梁柱节点的试验研究[J].建筑结构,2000,30(9):3-6.
[7]黎永,舒兴平.焊接孔长度对钢框架梁柱节点性能的影响[J].湖南大学学报(自然科学版),2003,30(1):92-96.
[8]陈杰,苏明周,申林,蔡益燕,郭海山.钢结构焊接翼缘板加强式梁柱刚性连接滞回性能试验研究[J].建筑结构学报,2007,6,28(3):1-7.
[9]张文元,朱福军.梁端翼缘扩大型钢框架梁柱节点的受力性能分析[J].建筑结构进展,2007,12,9(6):33-38.
[10]李波,杨庆山,茹继平.腹板开孔型钢框架梁柱节点抗震性能试验[J].哈尔滨工业大学学报,2006,8,38(8):1303-1309.
[11]王秀丽,殷占忠,李庆福,梁亚雄,罗维刚,史艳莉.新型钢框架梁柱节点延性性能试验研究[J],2004,19(6):8-11.
[12]蔡益燕,考虑塑性铰外移的钢框架梁柱连接设计[J].建筑结构,2004,2,34(2)3-5.
[13]吴芸,吴华英,张溶,彭少民.狗骨式刚性连接钢框架结构抗震性能试验研究[J].武汉理工大学学报,2003,5,25(5):37-39.
[14] FEMA-350. Recommended seismic design criteria for new steel moment-frame building. 2000:3.38-3.42.
[15] FEMA-355D. Post-Northridge welded Flange Connections. 2000:3.38-3.38.
[16]邱宏刚.高层钢框架削弱型节点的抗震性能分析:[硕士学位论文].北京:北京交通大学,2003.
[17] S J Chen .Dynamic behavior of frames with beam flanges shaved around connections[J].J .Construct Steel Res,1997,42(1):49-70.
[18]陈宏.高层钢结构节点地震脆断机理及抗震性能研究[D].中国矿业大学,2001.
[19]陈宏,石永久,王元清,赵大伟.钢框架梁柱组合节点受力性能的非线性分析[J],工业建筑,2001,31(5):67-69.
[20]完海鹰,汪凯.狗骨式节点和半刚性节点的受力性能综述[J].安徽建筑,2006,2:87-89.
[21] L. Simoes da Silva ,Rui D. Simoes, Paulo J. S. Cruz. Experimental behavior of end-plate beam-to-column composite joints under monotonically loading[J]. Engineering Strnctures,2001,23.
[22]过轶青,胡夏闽.端板型钢—混凝土组合节点受弯承载力塑性计算方法[J].钢结构,2003(1):16-19.
[23]胡夏闽,过轶青.半刚性组合节点初始转动刚度计算[J].工业建筑,2004(3):71-73.
[24]胡夏闽,过轶青,高华杰,刘建平.半刚性钢—混凝土组合节点受弯承载力的计算[J].南京工业大学学报(自然科学版)2002,24(5):25-29.
[25]王静峰.竖向荷载作用下半刚性连接组合框架的实用设计方法[D].同济大学申请博士学位论文,2005.
[26]刘清平.水平荷载作用下半刚性连接组合框架的实用设计方法[D].同济大学申请博士学位论文,2006.
[27]石文龙.平端板连接半刚性梁柱组合节点的试验与理论研究[D].同济大学申请博士学位论文,2006.3
[28]付果,薛建阳,葛鸿鹏,赵鸿铁,王臻.钢-混凝土组合梁界面滑移及变形性能的试验研究[J].建筑结构,2007,10,37(10):69-71.
[29]胡夏闽,刘子彤,赵国藩.钢-混凝土组合梁栓钉连接件的设计承载力[J].南京建筑工程学院学报,2004,4.
[30] S. J. Chen. Effect of composite action on seismic performance of steel moment connections with reduced beam sections[J]. J. Construct. Steel. Res, 2001, 57(5)
[31]李星荣等.钢结构连接节点设计手册[M].北京:中国建筑工业出版社,2005.
[32] Astaneh-Asl.Seismic Design of Steel Column-Tree Moment-Resisting Frames Steel Tips. Structural Steel Educational Council,Moraga:1997.
[33] Zandonini, R. Semi-Rigid Composite Joint. In Narayanan R(ed) Structural Connections: stability and strength[J]. Oxford: Elsevier.1989.
[34]李启才,陈绍蕃,王万祯.钢梁螺栓拼接设计方法的分析与建议[J].建筑结构,2002,2,32(2):7-9.
[35]李启才,顾强.树状柱框架中钢梁拼接的抗震设计有限元模拟对比[J].苏州科技学院学报(工程技术版),2006,6,19(2):1-5.
[36]李启才,顾强.抗滑移系数对框架中钢梁高强度螺栓拼接性能的影响研究[J].西安建筑科技大学学报,2007,3,27(1):43-50.
[37]常鸿飞,夏军武,吴渭,王迪,沈杰.钢框架树状柱节点整体设计研究[J].建筑钢结构进展,2005,6,7(3):49-51.
[38]夏军武,常鸿飞.钢框架柱带悬臂梁段拼接节点的弹塑性分析[J].中国矿业大学学报,2006,9,35(5):596-601.
[39]理素杰,王珊,白玉星等.高层钢框架新型梁柱节点抗震性能试验研究[J].钢结构,2008,增刊,279-288.
[40] Scott L. Jones, Gary T. Fry ,Michael D. Engelhardt. Experimental Evaluation of Cyclically Loaded Reduced Beam Section Moment Connections[J]. Journal of Structural Engineering,2002,4.
[41]唐九如.钢筋混凝土框架节点抗震[M].江苏:东南大学出版社,1989.
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